Abstract
By using a high resolution tunable diode laser absorption spectrometer combined with a cryogenically cooled optical multi-pass cell, we have measured the self-induced pressure shift coefficients for 8 transitions in the R branch of the (20 01) III ← (00 00) I band of carbon dioxide around 2.05 μm. This spectral region is of particular interest for the monitoring of atmospheric CO 2 with Differential Absorption Lidars (DiAL). The measurement of these shift coefficients was realized at five different temperatures ranging from 218 to 292 K in order to determine their temperature dependence. The results are thoroughly compared to previous values reported in the literature for the (20 01) III ← (00 00) I band of CO 2. The temperature dependence of the self-induced pressure shifts are reported experimentally for the first time for this specific CO 2 band.
Published Version
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